Electrical Excitation Of Liquid Crystal (i.e., Particular Voltage Pulses, Ac Vs. Dc, Threshold Voltages, Etc.) Patents (Class 349/33)
  • Patent number: 8754796
    Abstract: A D/A conversion circuit in accordance with the present invention, which is provided with a switch swD, allows a writing operation of a voltage (a true gradation voltage) to be performed at a higher speed by first applying a first voltage (a voltage close to the true gradation voltage), which is supplied without passing through a resistor element, to an output line and then applying a second voltage (the true gradation voltage), which is supplied via the resistor element, to the output line. Thus, the present invention can provide a D/A conversion circuit capable of writing display data to liquid crystal cells with higher precision at higher speed, and a semiconductor device utilizing such a D/A conversion circuit.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: June 17, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yukio Tanaka
  • Publication number: 20140160386
    Abstract: A liquid crystal element achieving both optical control utilizing a memory property and optical control capable of supporting moving image displays is disclosed. The first substrate and the second substrate of the element are set in an orientation process direction that ensures generation of a first orientation state, and a chiral material that generates a second orientation state is included in the liquid crystal layer. The layer transitions from the second orientation state to the first orientation state when an electric field of a layer thickness direction is applied. The layer transitions from the first orientation state to the second orientation state when an electric field of a direction perpendicular to the layer thickness direction is applied. And the layer returns to the second orientation state when an orientation change is generated according to the strength of the electric field when an electric field of the perpendicular direction is applied.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 12, 2014
    Applicant: Stanley Electric Co., Ltd.
    Inventor: Yasuo TOKO
  • Publication number: 20140160384
    Abstract: The present invention relates to a smectic A phase liquid crystal material, which contains at least one heterocyclic compound. The smectic A phase liquid crystal material of the present invention may further contain at least one ester compound and an ionic compound. By using the smectic A phase liquid crystal material in a display device, a displayed image can be completely erased without any residual images after a long-term placement or a long-term drive, the contrast is generally higher than 10, and the drive voltage is generally 20 to 50 V.
    Type: Application
    Filed: September 27, 2012
    Publication date: June 12, 2014
    Inventors: Wenlei Li, Gang Sun, Huan Yin, Zhixian Tan, Huaibin Zhai
  • Publication number: 20140152928
    Abstract: A liquid crystal display device with controllable viewing angle of the present invention has an upper substrate on which an upper substrate common electrode is disposed, a lower substrate on which a pixel electrode is disposed, and a liquid crystal layer sandwiched between the upper and the lower substrates. The liquid crystal molecules are vertical to the upper substrate when no voltage is applied, and a plurality of strip-like lower substrate common electrodes are disposed on the lower substrate and arranged in parallel substantially. The upper substrate common electrode and the pixel electrode provide an electric field perpendicular to the upper substrate, to form a first viewing angle mode when a voltage is applied, the lower substrate common electrode and the pixel electrode provide an electric field perpendicular to the upper substrate to form a second viewing angle mode when a voltage is applied.
    Type: Application
    Filed: June 4, 2013
    Publication date: June 5, 2014
    Inventors: Xuhui Peng, Zhihua Ling, Sitao Huo, Xinghua Nie
  • Publication number: 20140152932
    Abstract: A liquid crystal display device preventing flicker. The liquid crystal display device includes a plurality of pixels each having a transistor, a liquid crystal element to which a first signal and a second signal having opposite polarities are alternately applied through the transistor, and a capacitor including a first electrode and a second electrode. The liquid crystal element includes a pixel electrode and a common electrode partly overlapping with each other with an insulating film interposed therebetween, and a liquid crystal layer over the pixel electrode and the common electrode. The first electrode of the capacitor is electrically connected to the pixel electrode. The potential of the second electrode changes between a first potential and a second potential having different levels after the first signal is applied until the second signal is applied, whereby a change in the voltage applied to the liquid crystal layer is reduced.
    Type: Application
    Filed: November 14, 2013
    Publication date: June 5, 2014
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hiroyuki MIYAKE
  • Patent number: 8743306
    Abstract: A liquid crystal display device and a method of manufacturing the same. The liquid crystal display device includes a plurality of pixel cells on a substrate and a common voltage line. The common voltage line provides a common voltage to the pixel cells, and includes first to third interconnection patterns which are sequentially stacked over the substrate. Each of the pixel cells includes a storage capacitor which includes a lower electrode, and an upper electrode over the lower electrode. The second interconnection pattern includes the same material as a material of the upper electrode, and is formed in the same process as a process of the upper electrode.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: June 3, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong Joo Kim, Doo In Nam, Jang Yeop Shim, Kyung Gook Kwak, Seung Kyu Lee
  • Publication number: 20140146254
    Abstract: A display substrate has first and second conductive layers separated from one another by an insulation layer. The first and second conductive layers are used to integrally form on the display substrate, pixel units in a relatively central display area of the substrate and integrated gate driving circuitry as well as associated wirings thereof in one or more peripheral areas. The first and second conductive layers are covered by a first protection layer made of a first electrically insulative material. A second and supplementing protection layer is provided on top of the first protection layer. The supplementing protection layer (buffer layer) is formed of a material different from that of the first protection layer so as to provide supplemental resistance against corrosive chemical agents and supplemental resistance against formation of cracks.
    Type: Application
    Filed: January 29, 2014
    Publication date: May 29, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: KOOK-HYUN CHOI, HYO-TAEK LIM, DONG-HO SHIN, YOUNG-JE CHO, YONG-JO KIM, SANG-YONG NO, SUNG-HOON KIM, HYO-SEOP KIM
  • Publication number: 20140146253
    Abstract: A display device is disclosed. The display device includes a display panel including first to nth signal lines formed in a display area in which pixels are formed, and first to nth link lines which are formed in a non-display area excluding the display area from the display panel. The first to nth link lines are respectively connected to the first to nth signal lines, where ‘n’ is an even natural number equal to or greater than 2. At least one of the first to nth link lines includes a hole passing through the at least one link line.
    Type: Application
    Filed: October 15, 2013
    Publication date: May 29, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Minhee LEE, Hoansu SHIM
  • Patent number: 8736782
    Abstract: A notebook computer includes a host and a display device. The display device includes a casing and a liquid crystal display module. The casing is pivoted to the host. The liquid crystal display module includes a back cover, a light guide plate, a liquid crystal panel, a light source, and an antenna. The back cover is disposed in the casing. The light guide plate is disposed on and supported by the back cover. The liquid crystal panel is disposed on and supported by the back cover, and the light guide plate is located between the back cover and the liquid crystal panel. The light source is disposed on a side surface of the light guide plate. The antenna is integrally connected to the back cover.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: May 27, 2014
    Assignee: Young Lighting Technology Inc.
    Inventors: Chin-Lung Chen, Jeng-Bin Hsu
  • Publication number: 20140139768
    Abstract: An electrode structure is proposed for controlling a spatially non-uniform electric field driving a tunable liquid crystal lens or beam steering device. The spatially non-uniform electrode structure enables the generation of a predetermined spatially non-uniform electric field profile where complex capacitive coupling between multiple different electrically floating neighboring electrode segments is employed for the generation of the electrical field of desired form by supplying an initial electric potential to a limited number of electrodes.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 22, 2014
    Applicant: LensVector Inc.
    Inventors: Tigran GALSTIAN, Vladimir PRESNIAKOV, Karen ASATRYAN, Amir TORK, Armen ZOHRABYAN, Aram BAGRAMYAN
  • Publication number: 20140139767
    Abstract: A liquid crystal display device includes a lower substrate, an upper substrate and a liquid crystal layer. The lower substrate includes an insulating substrate, a first electrode, an insulating layer disposed on the first electrode, a second electrode and a third electrode. The first electrode is disposed on the insulating substrate and includes a first sub-electrode. The second electrode is disposed on the insulating layer and includes a second sub-electrode overlapping the first sub-electrode. The third electrode is disposed on the insulating layer and includes a third sub-electrode spaced apart from the first and second sub-electrodes.
    Type: Application
    Filed: May 9, 2013
    Publication date: May 22, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: CHANG-HUN LEE, Cheol SHIN, Seungho HONG
  • Patent number: 8730417
    Abstract: The LCD device of this invention comprises an LC panel having a plurality of pixels defined by a plurality of gate lines and data lines, one or more gate shorting bars disposed outside the LC panel, for applying a test signal to the LC panel through gate lines, first and second data shorting bars disposed outside the LC panel, for applying test signals to odd and even numbered data lines, respectively, an odd numbered data link line connected to the odd numbered data line, and spacing from the first data shorting bar by a predetermined distance, an even numbered data link line connected to the even numbered data line, and spacing from the second data shorting bar by a predetermined distance, and a connection line for electrically connecting the odd numbered data link line and the first data shorting bar with each other, and connecting the even numbered data link line and the second data shorting bar with each other through contact holes, wherein the odd numbered data link line has a length equal to that of th
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: May 20, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Suk-Ho Cho, Jae-Yi Chun, Ji-Suk Min
  • Publication number: 20140132868
    Abstract: An optically isotropic liquid crystal composition is described. The liquid crystal composition contains an achiral component T and a chiral agent, contains at least one compound represented by formula (1) as a first component of the achiral component T, and exhibits an optically isotropic liquid crystal phase: wherein, for example, R1 is alkyl having 1 to 20 carbons; L1 to L8 are independently hydrogen or fluorine; Z1 to Z3 are each independently a single bond, —COO— or —CF2O—, but at least one thereof is —COO—; n1 and n2 are each independently 0 or 1; and X1 is halogen.
    Type: Application
    Filed: May 22, 2013
    Publication date: May 15, 2014
    Applicants: JNC Petrochemical Corporation, JNC Corporation
    Inventors: Koki Sago, Shin-ichi Yamamoto, Takafumi Kuninobu, Yasuhiro Haseba
  • Publication number: 20140132864
    Abstract: A method for setting a pre-tilt angle of liquid crystal molecules includes (1) providing liquid crystal material, a CF substrate, and a TFT substrate; (2) arranging the substrates to form a gap therebetween in which the liquid crystal material is filled to form a liquid crystal cell; (3) providing a drive control circuit that generates driving voltages and connecting the drive control circuit to the TFT substrate; (4) providing a small-amplitude oscillation device and an irradiation intensity variable ultraviolet light source and positioning the liquid crystal cell on the oscillation device; (5) activating the oscillation device to cause the liquid crystal cell to make small-amplitude oscillation and conducting on the drive control circuit to supply driving voltages to drive the liquid crystal material, the ultraviolet light source being applied to irradiate the liquid crystal cell with ultraviolet lights of different intensities; and (6) repeating step (5) for at least one time.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 15, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., LTD.
    Inventors: Xinhui Zhong, Xing Feng
  • Publication number: 20140132865
    Abstract: A liquid crystal display device has a pair of wall electrodes facing each other, which is disposed on pixels on a first substrate, functions as one of pixel electrodes and a common electrode, and takes a posture of standing on the first substrate. Also, the liquid crystal display device has a center electrode that is disposed between the pair of wall electrodes, functions as the other of the pixel electrodes and the common electrode, has a convexity lower in height than the pair of wall electrodes, and makes a width in a direction along which the pair of wall electrodes faces each other gradually smaller toward the second substrate. According to this liquid crystal display device, since a vertical electric field can be prevented from being developed on an upper side of the center electrode, a transmittance of light can be improved.
    Type: Application
    Filed: October 29, 2013
    Publication date: May 15, 2014
    Applicant: Japan Display Inc.
    Inventors: Takato HIRATSUKA, Osamu ITO, Daisuke SONODA, Toshimasa ISHIGAKI
  • Publication number: 20140125904
    Abstract: A liquid crystal display includes: a substrate; a gate line and a data line disposed on the substrate; a semiconductor layer disposed on the substrate; first and second field generating electrodes disposed on the substrate; and a first protecting layer formed from the same layer as the first field generating electrode and covering at least a portion of the data line.
    Type: Application
    Filed: October 4, 2013
    Publication date: May 8, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jong-Hyun CHOUNG, Wang Woo LEE, Bong-Kyun KIM, In-Bae KIM, Seol-Il KIM, Young Min MOON, Hong Sick PARK, Ki Tae KIM
  • Publication number: 20140125895
    Abstract: A liquid crystal display panel includes a lower substrate, an upper substrate and a liquid crystal layer. The lower substrate includes a first base substrate and a pixel electrode formed on the first base substrate. The first base substrate includes a first sub pixel area and a second sub pixel area. The upper substrate includes a second base substrate and a common electrode formed on the second base substrate. The liquid crystal layer is interposed between the lower substrate and the upper substrate, and includes a first polymer disposed in the first sub pixel area and a second polymer disposed in the second pixel area. The first polymer has a first pre-tilt, and the second polymer has a second pre-tilt different from the first pre-tilt. Thus, a display quality of a liquid crystal display apparatus including the liquid crystal display panel may be enhanced.
    Type: Application
    Filed: February 22, 2013
    Publication date: May 8, 2014
    Applicants: Pusan National University Industry-University Cooperation Foundation, Samsung Display Co., Ltd.
    Inventors: Hoon KIM, Ki-Chul SHIN, Tae-Hoon YOON, Ki-Han KIM, Sun-Wook CHOI
  • Publication number: 20140125896
    Abstract: According to some aspects, a liquid crystal display panel comprising an electrode is provided. The electrode comprises a plurality of convex branch electrode portions arranged in a plane, the convex branch electrode portions being convex when viewed from a first direction perpendicular to the plane and extending from a central region of the electrode to a periphery of the electrode, and a plurality of concave branch electrode portions, the concave branch electrode portions being concave when viewed from the first direction, extending from the central region to the periphery and adjacent to convex branch electrode portions. According to some aspects, a method of applying a pretilt to molecules in a liquid crystal layer of a liquid crystal display panel by applying a voltage to the liquid crystal layer via first and second electrodes is provided.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 8, 2014
    Applicant: Sony Corporation
    Inventors: Shunichi Suwa, Masashi Miyakawa, Chikashi Kobayashi, Yoji Nagase
  • Publication number: 20140125897
    Abstract: An electric device includes a dielectric substrate, a high frequency signal line formed on the surface of the dielectric substrate, a ground conductor facing the high frequency signal line through at least part of the thickness of the dielectric substrate, an upper electrode of capacitor disposed above the surface of the dielectric substrate and faces the high frequency signal line, and a liquid crystal material filled in a space defined between the high frequency signal line and the upper electrode of capacitor.
    Type: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Osamu TOYODA, Xiaoyu MI
  • Publication number: 20140118639
    Abstract: The present display device includes a liquid crystal panel having a liquid crystal layer between an array substrate and a facing substrate. The array substrate has an electrode layer having an upper electrode and a lower electrode facing each other in a Z direction, and an opening including a plurality of slits extending in an X direction is formed in the upper electrode and the lower electrode. The liquid crystal layer is provided on the electrode layer, liquid crystal molecules in vicinity regions on one side and the other side of the opening which face each other in a width direction of each slit are oriented as rotating in reverse to each other, and the facing substrate has a conductive layer.
    Type: Application
    Filed: October 21, 2013
    Publication date: May 1, 2014
    Applicant: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Publication number: 20140118647
    Abstract: A liquid crystal lens device according to an embodiment includes: a first substrate; a pair of first electrodes on a first surface of the first substrate, extending in a first direction, and arranged in a second direction perpendicular to the first direction; a pair of second electrodes between the pair of first electrodes on the first surface, extending in the first direction, and arranged in the second direction; third electrodes each between one of the first electrodes and one of the second electrodes on the first surface, extending in the first direction, and arranged in the second direction; a second substrate including a second surface facing the first surface; a counter electrode on the second surface of the second substrate; and a liquid crystal layer between the first substrate and the second substrate.
    Type: Application
    Filed: June 12, 2013
    Publication date: May 1, 2014
    Inventors: Yoshiharu MOMONOI, Masako KASHIWAGI, Ayako TAKAGI, Shinichi UEHARA
  • Patent number: 8711469
    Abstract: An electrophoretic element includes: an electrophoretic particle; a porous layer formed of a fibrous structure containing a non-migrating particle having optical reflective characteristics different from those of the electrophoretic particle and having a plurality of pores; and a partition that is partially adjacent to the porous layer and defines a space for accommodating the electrophoretic particle. An area rate of the pores per unit area of the porous layer is small in an adjacent region where the partition is adjacent to the porous layer compared with in a non-adjacent region where the partition is not adjacent to the porous layer.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: April 29, 2014
    Assignee: Sony Corporation
    Inventors: Atsuhito Yasui, Hidehiko Takanashi, Ken Kobayashi, Ryo Kasegawa, Aya Shuto
  • Publication number: 20140111717
    Abstract: A drive scheme for a cholesteric liquid crystal display device comprises supply of a drive signal to the electrode arrangement of a cell comprising a layer of cholesteric liquid crystal material. The drive signal comprises at least one initial pulse that drives the cholesteric liquid crystal material into the homeotropic state; a relaxation period that allows the cholesteric liquid crystal material to relax into the planar state; and a drive sequence during which the root mean square voltage of the drive signal, determined over periods within which the cholesteric liquid crystal does not relax, increases monotonically. The drive sequence reduces the reflectivity of the cholesteric liquid material without any fluctuations.
    Type: Application
    Filed: June 25, 2012
    Publication date: April 24, 2014
    Applicant: VERSATILE TECHNOLOGIES LTD
    Inventor: Christopher John Hughes
  • Publication number: 20140111716
    Abstract: A liquid crystal display panel having pixel regions includes a light shielding layer having opening regions corresponding to the pixel regions, first pixel electrodes and second pixel electrodes. Each first pixel electrode includes strip first pixel electrode patterns. Each second pixel electrode includes strip second pixel electrode patterns. Each opening region includes sub regions. Each of the strip first pixel electrode patterns and its neighboring strip second pixel electrode pattern in each of the sub regions are separated by an electrode spacing. Electrode spacings in different sub regions are different. An area of all the sub regions with the electrode spacings less than or equal to 12 micrometers accounts for less than or equal to 35% area of each opening region. An area of the other sub regions with the electrode spacings greater than 12 micrometers accounts for more than or equal to 65% area of each opening region.
    Type: Application
    Filed: March 1, 2013
    Publication date: April 24, 2014
    Applicant: AU OPTRONICS CORPORATION
    Inventors: Sau-Wen Tsao, Mei-Ju Lu, Cho-Yan Chen, Tien-Lun Ting
  • Patent number: 8704980
    Abstract: A display panel comprises a first and a second substrates and a BP liquid crystal layer. A first electrode is provided on the first substrate, a second electrode is provided on the second substrate, and reflection portions each having a first and a second reflection surfaces are provided between the first and second substrates. When light is transmitted to the panel, the light is reflected on the first reflection surface of the reflection portion and the light after the first reflection is transmitted to an adjacent reflection portion through the liquid crystal layer and is reflected on the second reflection surface of the adjacent reflection portion. When different voltages are applied, the liquid crystal layer will shift the phase position of the light passing therethrough, while when there is no voltage, the liquid crystal layer will not shift the phase position of the light passing therethrough.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: April 22, 2014
    Assignee: Infovision Optoelectronics (Kunshan) Co. Ltd.
    Inventors: Lianbo Mao, Wenjun Dai, Xiaoliang Zhu, Yaru Fan
  • Patent number: 8704233
    Abstract: The present invention improves the aperture ratio of a pixel of a reflection-type display device or a reflection type display device without increasing the number of masks and without using a blackmask. A pixel electrode (167) is arranged so as to partially overlap a source wiring (137) for shielding the gap between pixels from light, and a thin film transistor is arranged so as to partially overlap a gate wiring (166) for shielding a channel region of the thin film transistor from light, thereby realizing a high pixel aperture ratio.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 22, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama
  • Publication number: 20140104520
    Abstract: A liquid crystal display accommodates a reflective portion with a concavo-convex reflecting pixel electrode for reflecting incident light from the display face side, and a transmissive portion with a transmissive pixel electrode for transmitting light output from the backlight. In a wide viewing angle region, luminance of the reflective portion is greater than the transmissive portion. In other angle regions, luminance of the transmissive portion is greater than the reflective portion. In a wide viewing field mode, the reflective portion and transmissive portion both perform normal display. In the narrow viewing field mode, the transmissive portion performs normal display, while the reflective portion performs cancelling data display, thereby rendering unviewable the display content of the transmissive portion from beyond a certain viewing angle.
    Type: Application
    Filed: August 7, 2013
    Publication date: April 17, 2014
    Applicant: NLT Technologies, Ltd.
    Inventors: Jin Matsushima, Hiroshi Okumura, Ken Sumiyoshi
  • Publication number: 20140104522
    Abstract: A liquid crystal display device according to the present invention is directed at optimizing the viewing angle characteristics of black luminance in a diagonal direction by realizing a low tilt angle without depending on an oriented film or an orientation treatment method in an FFS mode. The liquid crystal display device of the present invention is a liquid crystal display device in the FFS mode, including: a liquid crystal layer having a negative dielectric anisotropy; a color filter substrate disposed to sandwich the liquid crystal layer; and a TFT substrate having pixels, wherein a CF side common electrode which controls a potential is present in a liquid crystal layer side of the color filter substrate; and there is electric field controlling means which forms an alternating electric field between the CF side common electrode and a TFT side common electrode.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 17, 2014
    Applicant: NLT Technologies, Ltd.
    Inventors: Shinya ONDA, Hidenori IKENO
  • Publication number: 20140104521
    Abstract: A display includes: a display panel; an illumination unit; and a driving unit. The illumination unit includes a pair of light transmissive substrates, two light sources, an optical modulation layer configured to exhibit diffusion or transparency for light from each of the two light sources, and an electrode. The optical modulation layer is configured to switch a wide-angle diffusion intensity and a front diffusion intensity of light emitted from the illumination unit, by switching of a magnitude of a voltage applied to the electrode. The driving unit allows a diffusion intensity ratio of the light emitted from the illumination unit in a dual-view mode to be higher than the diffusion intensity ratio in a normal mode by switching the magnitude of the voltage applied to the electrode. The diffusion intensity ratio is defined as dividing the wide-angle diffusion intensity by the front diffusion intensity.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 17, 2014
    Applicant: Sony Corporation
    Inventors: Taizo Nishimura, Kentaro Okuyama, Tomoaki Suzuki
  • Patent number: 8698970
    Abstract: An object is to provide a display device with excellent display characteristics, where a pixel circuit and a driver circuit provided over one substrate are formed using transistors which have different structures corresponding to characteristics of the respective circuits. The driver circuit portion includes a driver circuit transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using a metal film, and a channel layer is formed using an oxide semiconductor. The pixel portion includes a pixel transistor in which a gate electrode layer, a source electrode layer, and a drain electrode layer are formed using an oxide conductor, and a semiconductor layer is formed using an oxide semiconductor. The pixel transistor is formed using a light-transmitting material, and thus, a display device with higher aperture ratio can be manufactured.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: April 15, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Masashi Tsubuku, Kengo Akimoto, Miyuki Hosoba, Masayuki Sakakura, Yoshiaki Oikawa
  • Publication number: 20140098310
    Abstract: A liquid crystal display is provided that includes a first base substrate including a first surface, a second base substrate including a second surface, a liquid crystal layer including liquid crystal molecules positioned between the first and second base substrates and configured to change alignment when electrical power is applied thereto, a first electrode positioned on the second surface and including a plurality of substantially parallel grooves extending in a first direction on a surface facing the first base substrate, the plurality of grooves configured to align the liquid crystal molecules in a preset direction when electrical power is applied, and a second electrode positioned on the first surface or on the second surface, wherein a voltage difference between the first and second electrodes applies the electrical power to the liquid crystal molecules.
    Type: Application
    Filed: March 18, 2013
    Publication date: April 10, 2014
    Inventors: Kiyong LEE, Seungmin SEEN, Jeongseok KI, Sangjo RYU
  • Patent number: 8693087
    Abstract: A system and method for operating a light emitting device utilizing charged quantum dots is described. In one embodiment, charged quantum dots are suspended in a liquid between an excitation plate and a cover plate. The excitation plate carries short-wave excitation light. Charged quantum dots near the surface of the excitation plate may emit light in response to an evanescent field generated by the short-wave excitation light undergoing total internal reflection within the excitation plate. The excitation plate and the cover plate may be coated with one or more transparent electrodes. The movement of charged quantum dots within the liquid may be controlled by applying one or more bias voltages to the one or more transparent electrodes. Light emission from a particular region near the surface of the excitation plate may be controlled by moving charged quantum dots into or out of the particular region.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: April 8, 2014
    Assignee: Microsoft Corporation
    Inventors: Andreas Nowatzyk, Rod Fleck
  • Publication number: 20140085555
    Abstract: A voltage adjustment circuit for adjusting a voltage to be supplied to scanning lines of a display device includes a slope adjustment circuit configured to adjust a slope of a decrease in the voltage based on data that is externally input, and a clamp voltage adjustment circuit configured to adjust a voltage value at which the voltage is clamped based on the data.
    Type: Application
    Filed: November 25, 2013
    Publication date: March 27, 2014
    Applicant: Spansion LLC
    Inventors: Katashi HASEGAWA, Masaya Mizutani
  • Publication number: 20140085554
    Abstract: According to embodiments of the invention, there are disclosed a liquid crystal display panel and a liquid crystal display device. The liquid crystal display panel comprises: a liquid crystal layer; a conductive structure, surrounding the liquid crystal layer; and a driving circuit, connected to the conductive structure.
    Type: Application
    Filed: October 10, 2012
    Publication date: March 27, 2014
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Peilin Zhang, Jaegeon You
  • Publication number: 20140078429
    Abstract: A mono domain vertical alignment type liquid crystal display apparatus to be multiplex driven is provided whose display uniformity at a large pretilt angle (near 90°) is improved. Waveform A is applied to a liquid crystal cell of a mono domain vertical alignment type, the waveform A having a duty not lower than 4 and a frame frequency of f. The frame frequency f is determined from a pretilt angle ?p, and is a frequency not lower than 60 Hz at a pretilt angle of 88.5°??p<89.6° or a frequency not lower than [120×(?p?89.6)+60] Hz at a pretilt angle of 89.6°??p?89.9°.
    Type: Application
    Filed: October 31, 2013
    Publication date: March 20, 2014
    Applicant: STANLEY ELECTRIC CO., LTD.
    Inventor: Yoshihisa IWAMOTO
  • Publication number: 20140078427
    Abstract: A microcontroller for controlling a liquid crystal display (LCD) is mountable in any one of multiple package types. The microcontroller includes a LCD controller to generate logical mapping signals indicative of voltages to be applied to segment terminals of a LCD glass. A driver circuit drives the segment terminals selectively. A remapping unit receives the logical mapping signals from the LCD controller and maps the logical mapping signals, for each of the package types, to physical segment terminal drivers in the driver circuit based on a distribution of I/O terminals that are bonded for each package type when that package type is used with the LCD glass.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 20, 2014
    Applicant: ATMEL CORPORATION
    Inventors: Sebastien Jouin, Sylvan Garnier, Thierry Delalande
  • Publication number: 20140078410
    Abstract: A window apparatus comprises a first layer including a liquid crystal microdroplet (LCMD) display switchable between transparent and opaque states in response to a change in an applied electrical voltage and a second layer coupled to the first layer. The second layer is changeable between a light transmitting configuration and a light blocking configuration.
    Type: Application
    Filed: January 23, 2013
    Publication date: March 20, 2014
    Applicant: Scienstry, Inc.
    Inventor: Jiansheng Wang
  • Publication number: 20140078428
    Abstract: A display device includes a first substrate, a second substrate, a plurality of pixel units, a driving unit, and column insulation structure. The first substrate has a display area and a non-display area outside of the display area. The pixel units are formed at the display area of the first substrate and configured to receive an output signal. Formed at the non-display area of the first substrate, the driving unit includes first and second conductive layers, and first and second insulation layers which are alternately arranged. The connecting layer is connected between the first and second conductive layers via the through-holes formed at the first and second insulation layers. The column insulation structure corresponds to the connecting layer and is formed between the first and second substrates.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 20, 2014
    Applicant: InnoLux Corporation
    Inventors: Li-Wei SUNG, Yu-Chien Kao, Hui-Min Huang, Mei-Ling Kuo
  • Publication number: 20140071361
    Abstract: A liquid crystal display device is disclosed. The device includes data lines, gate lines, and common lines in parallel with the gate lines. The device also includes at least one dummy gate line in parallel with the gate lines, gate line trigger circuits, and common line trigger circuits. One end of the last gate line is connected with the last gate line trigger circuit, one end of each of remaining gate lines is connected with a gate line trigger circuit corresponding to said each of remaining gate lines, and the other end of said each of the remaining gate lines is connected with a next gate line trigger circuit. The first common line trigger circuit is connected with one dummy gate line, and each of remaining common line trigger circuits is connected with one or more preceding gate line trigger circuits.
    Type: Application
    Filed: November 11, 2013
    Publication date: March 13, 2014
    Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Bojia LV, Dong QIAN, Xiangzi KONG, Hanyu GU
  • Patent number: 8670080
    Abstract: The drain lines are such that one drain line is formed for every two pixels adjacent to each other within the same pixel row, the gate lines are formed of a first gate line connected to one of the two pixels connected to the same drain line within the same pixel row and a second gate line connected to the other pixel, the pixel electrode is formed of a first linear electrode inclined in a plus direction from the first direction, and a second linear electrode inclined in a minus direction from the first direction, in a region in which the pixel electrode is superimposed over the common electrode, and each pixel has the first and second gate lines and thin film transistor formed in a region between the region of the first linear electrode and the region of the second linear electrode.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: March 11, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Takao Sato
  • Publication number: 20140063384
    Abstract: A 3D display device and LC barrier are disclosed. The 3D display device comprises a non-polarized light display unit and an LC barrier. The LC barrier comprises a liquid crystal cell arranged at one side of the non-polarized light display unit, and the liquid crystal cell comprises an upper substrate, a lower substrate and a cholesteric liquid crystal layer between the substrates; a first quarter-wave plate provided on the upper substrate; a polarizer provided on the first quarter-wave plate; an absorption axis of the polarizer forms a predetermined angle with a fast axis of the first quarter-wave plate.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: BOE Technology Group Co., Ltd.
    Inventors: Wenbo Li, Yanbing Wu
  • Publication number: 20140063386
    Abstract: A peep-proof display apparatus includes a plurality of sub-pixels disposed between a first substrate and a second substrate. Each sub-pixel includes a first conductive layer, a color filter layer, an isolation film, a light modulator layer, a second conductive layer, an insulation film and a third conductive layer. The color filter layer is disposed between the first conductive layer and the isolation film. The light modulator layer is disposed between the isolation film and the second conductive layer. The insulation film is disposed between the second and third conductive layers. In a first display mode, the light modulator layer is applied with an electric field parallel thereto. In a second display mode, the light modulator layer is applied with an electric field parallel thereto and an electric field perpendicular thereto.
    Type: Application
    Filed: April 15, 2013
    Publication date: March 6, 2014
    Applicant: AU OPTRONICS CORP.
    Inventors: CHIH-HSIANG YANG, CHAO-WEI YEH, CHEN-FENG FAN, CHIEN-HUANG LIAO, WEN-HAO HSU
  • Publication number: 20140063387
    Abstract: A blue phase liquid crystal display panel and a blue phase liquid crystal display are disclosed. The blue phase liquid crystal display panel comprises an array substrate (12) and a color filter substrate (15) opposed to each other, and blue phase liquid crystal molecules (14) arranged between the array substrate (12) and the color filter substrate (15). A plurality of the first common electrodes (171) in strip shape and a plurality of pixel electrodes (13) in strip shape are alternately arranged on the array substrate (12), and there is interval between the first common electrode (171) and the pixel electrode (13) in adjacent; a plurality of the second common electrodes (172) in strip shape are arranged on the color filter substrate (15), wherein each of the second common electrodes (172) is disposed opposite to one of the first common electrodes (171).
    Type: Application
    Filed: October 24, 2012
    Publication date: March 6, 2014
    Applicant: BOE Technology Group Co., Ltd.
    Inventor: Xin Gu
  • Publication number: 20140063388
    Abstract: A liquid crystal display (LCD) that includes a plurality of segments, and a plurality of control lines to activate the plurality of segments. Each of the plurality of segments is associated with an intersection of two of the control lines, and each of the plurality of control lines intersects with each of the other plurality of control lines.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 6, 2014
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Zhang Jun, Ji Ru Jun
  • Publication number: 20140063389
    Abstract: A display device including a display panel, further including one or more segment electrodes, a plurality of common electrodes, and pixels which are positioned at the intersections of these electrodes, and carrying out a display wherein drive voltages are applied to the pixels; first and second segment drivers, which drive the segment electrodes; and first and second common drivers which drive the common electrodes. The common electrodes are divided into at least first and second groups. Each common driver and each segment driver is respectively disposed corresponding to the first and second groups. The drive period of the first common driver and the drive period of the second common driver overlap at least partially.
    Type: Application
    Filed: November 9, 2011
    Publication date: March 6, 2014
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Toshihisa Matsumoto
  • Publication number: 20140062981
    Abstract: Systems, methods, and devices are provided for an electronic display with thermally compensated pixels. Such an electronic display may have an array of pixels, at least some of which may be thermally compensated pixels that exhibit reduced thermal color shift over an operational temperature range. These thermally compensated pixels may have compensation electrodes that induce an electric field in the thermally compensated pixel that cause a reduction in color shift.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 6, 2014
    Applicant: APPLE INC.
    Inventors: Yi Huang, Mingxia Gu, Jean-Jacques Philippe Drolet, Wei Chen
  • Patent number: 8665385
    Abstract: A non-volatile electronic display includes a light valve plate comprising a plurality of liquid crystal cells on a transparent substrate; a plurality of “floating/storage” nodes functioning like non-volatile memories formed on the transparent substrate and corresponding to the liquid crystal cells, and a plurality of word lines and a plurality of bit lines connected to the plurality of non-volatile memories and supplying signal to store charge to at least one non-volatile memory. The charge is retained in the at least one “floating/storage” nodes functioning like non-volatile memory for a predetermined period when no external power is applied to the non-volatile electronic display.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: March 4, 2014
    Inventor: Shu-Lu Chen
  • Publication number: 20140049711
    Abstract: The present liquid crystal panel includes an array substrate including a pixel electrode, a transistor, and first and second data signal lines; and a counter, the array substrate includes first and second sides which are adjacent to each other, a first terminal having shorter distance from the first side than distance from the second side in a plan view, and a second terminal having shorter distance from the second side than distance from the first side in a plan view are formed in the array substrate, the first data signal line is electrically connected to the first terminal, the second data signal line and the second terminal are electrically connected via a relay wiring formed in a layer different from the first and second data signal lines. According to the above configuration, the number of terminals for data signal lines can be increased without changing the size of the liquid crystal panel.
    Type: Application
    Filed: May 17, 2012
    Publication date: February 20, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Tamotsu Sakai
  • Publication number: 20140049710
    Abstract: According to an aspect of the invention, there is provided a liquid crystal device, including: which makes it possible to dispose a spacer for setting a distance between substrates, to prevent deterioration of display quality by eliminating thickness non-uniformity of an alignment layer due to the presence of a retardation layer, to prevent deterioration of display quality by preventing dissolution and flow of an ingredient of the retardation layer to the liquid crystal layer side, and the like in the liquid crystal device having a horizontal electric field system of a transflective type, and to provide an electric apparatus using the same.
    Type: Application
    Filed: October 29, 2013
    Publication date: February 20, 2014
    Applicant: Japan Display West Inc.
    Inventor: Masakatsu Higa
  • Publication number: 20140049709
    Abstract: A liquid crystal lens device includes a liquid crystal optical unit and a drive unit. The liquid crystal optical unit includes a first substrate unit, a second substrate unit, and a liquid crystal layer. The first substrate unit includes a first substrate, a plurality of first electrodes, and a plurality of second electrodes. The second substrate unit includes a second substrate and a first opposing electrode. The drive unit is configured to control a voltage between the first electrode and the first opposing electrode and a voltage between the second electrode and the first opposing electrode. The drive unit changes the voltage between the second electrode and the first opposing electrode from a third voltage to a fourth voltage after changing the voltage between the first electrode and the first opposing electrode from a first voltage to a second voltage.
    Type: Application
    Filed: May 2, 2013
    Publication date: February 20, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masako KASHIWAGI, Shinichi UEHARA, Ayako TAKAGI, Yoshiharu MOMONOI, Masahiro BABA